mph to ft/s Converter

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Convert miles per hour to feet per second at the exact rate 1 mph = 22/15 ft/s ≈ 1.4667 ft/s, so 60 mph = 88 ft/s exactly. Useful for stopping-distance and reaction-time analysis in driving safety, projectile-motion physics and US sport-radar reporting. Anchors: 30 mph = 44 ft/s, 90 mph = 132 ft/s, 130 mph ≈ 190.67 ft/s. Browser-local.

Mile per hour (mph)
Foot per second (ft/s)

Mile per hour (mph) → Foot per second (ft/s)

Quick reference table

Mile per hour (mph)Foot per second (ft/s)
10 mph14.6667 ft/s
25 mph36.6667 ft/s
50 mph73.3333 ft/s
60 mph88 ft/s
80 mph117.3333 ft/s
100 mph146.6667 ft/s
120 mph176 ft/s
150 mph220 ft/s
200 mph293.3333 ft/s

Glossary

Mile per hour (mph)

A mile per hour is the customary speed unit used in the United States, the United Kingdom and a few other countries for road traffic, athletic events and weather reports. 1 mph = 1.6093 km/h = 0.4470 m/s. Typical US highway limits are 55–75 mph; a 100 m sprinter peaks at about 27 mph; a hurricane is sustained winds above 74 mph.

Foot per second (ft/s)

A foot per second is an imperial speed unit used in US engineering — projectile ballistics, fluid mechanics and HVAC airflow specifications. 1 ft/s = 0.3048 m/s = 1.0973 km/h = 0.6818 mph. The speed of sound at sea level is about 1,125 ft/s; a fast pitcher's fastball reaches about 145 ft/s.

Metric / SI speed

In the metric system, speed is reported in meters per second (scientific) or kilometers per hour (everyday). The relation is exact: 1 m/s = 3.6 km/h. Most countries use km/h on road signs and speedometers; m/s appears in physics, engineering, weather data and athletics where fine-resolution timing matters.

Imperial / US Customary speed

In the United States, the United Kingdom and a few other countries, road speeds are reported in miles per hour (mph). US engineering also uses feet per second (ft/s). 1 mph = 1.6093 km/h = 0.4470 m/s. Maritime and aviation worldwide use knots (1 knot = 1.852 km/h), independent of the metric/imperial divide.

Related tools

ft/s to mph
Convert ft/s to mph — 1 ft/s ≈ 0.6818 mph
mph to m/s
Convert mph to m/s — 1 mph = 0.44704 m/s
mph to km/h
Convert mph to km/h — 1 mph = 1.6093 km/h
Speed Converter
Convert speed — m/s, km/h, mph, knots, ft/s, mach